In recent years, due to the advancement of science and technology, it has been used in B-ultrasound (obstetric ultrasound) and developed into 3D and even 4D forms. However, the \”incomplete prenatal examination\” in the news reports has made many pregnant women feel panic, thinking that with such advanced technology, why did they not know that the baby was defective until after giving birth? What information can pregnant mothers get after having a B-ultrasound? What are the conditions of babies that B-ultrasound (prenatal ultrasound) cannot take care of? Let me tell you~ B-ultrasound is not everything. From the moment she learns that she is pregnant, the pregnant mother’s biggest wish is for her baby to be healthy.